Cylinder for internal-combustion engines



Fe'b." s, 1927.

Cil

j where it is held by Vthe raised cover 3.

Patented. Pebl-8, 1927- L' UNITE smis- CHARJES BIENZ, 01?'` ST. JEAN, ,SIlVLITZEIRLAND.v

yCYLINDER Fon INTERNAL-COMBUSTION Eiverms.

'v Application filed January 17, 1924, Serial No. 686,728, and in the Netherlands July 14, 1923.-

This. invention relates to improvements in cylinders for internal combustion engines nr explosion engines and more particularly to a cylinder having sliding valves displace.

able along the outer wall of the cylinder and adapted to close a port formed therein.

An Object of the present invention lis to provide means whereby at the moment of explosion the seating of the valve on the wall of the cylinder is extremely gas tight.

vA further object of the invention is to provide a construction of cylinder wherein the pressure of the gas within the cylinder is utilized to cause the tight seating of the f slide valve on the outer wall. A stillfurther object is to improve the lubrication between the slide valveand the outer wallwhereby free sliding of vthe one relatively to the other is effected.

The accompanying drawings illustrate as an example one form 0f construction according to the present invention. Fig. l is a longitudinal section of an en gine provided with a cylinder in conformity kwith the present'invention'.

Fig. 2 is a side elevation of the cylinder showing the slide valve.

Fig. 8 .is a sectional` elevation along the line A-B of Fig. 2. p

Fig. -l is a sectional plan along the line C-I) of Fig. 2.

Fig. a plan view of the'eylinder. n

The cylinder l of the internal combustion engine illustrated is arranged in a bOdyIZ n said cylinder l reciprocatesa piston 4r., said piston vbeing connected by a rod 5 with the motor shaft 6. plate 7 controlling the levers 8 adapted to cause thedisplacement of the slide valve 9 againstthe outer wall of the cylinder l, the said slide valves closing'the ports l() proinder 1 vthe latter The latter carries a cam vided' in the walls ofthe cylinder and con-Y trolling the admission 'of the carburetted gas or the exhaust of the burnt'gas; i

Saidl cylinder l is grooved by a recess Il arranged in proximity to the ports 10 sol as to reduce the thickness of the kwalls at this point in order to vgive them elasticity and allow this part to be pressed by the pressure'Y of the gas in the cylinder against the slidev valve 9'in order to secure the resiliency of the closing of the port 10 by the slide valve 9. v

With the object of ensuring the lubrica# quent friction onl the outer Vhas formed externally thereon grooves l2 portion 'of ,theV oil the outside lwall and thus to ensure the lubrication ofthe slide `valve 9 against .the sliding friction withthe objectof insuring` lcommunicating vby suity Vable apertures with the interior of the cyl? inder l so as to allow a Y contained Vinside the cylinder to be forced to ktion of the slide valve 9 against the conse-V wall of thecylcylinder wall, and above the top of said pis- 'Y ton, a slide valve having an arcuate surface engaging the outside of said 'cyl1nder,' and means to' reciprocate said yvalvestok coverl and uncover said ports, said cylinder-having weakening slots cut therein adjacent said ports lwhereby pressure within the cylinder above the piston will allow slight movement 'l of the cylinder'wallagainst the slide valves.

In `witnessy whereof, I have hereunto signedmy name this 3rd day of November, K

1923. Y y CHARLES Bilanz. 

